1338599 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種果實選別機之計重襞置， I於每次執行秤重作業時確實扣除承載盤重量， 貫精準淨重值的計重裝置。 尤指一種 而得出果 【先前技術】 已裎屮夕生,a ^ 吓置的裝置早1338599 IX. Description of the Invention: [Technical Field] The present invention relates to a weight sorting device for a fruit sorting machine, and a weighing device that deducts the weight of the carrying tray and the accurate net weight value each time the weighing operation is performed. . Especially one kind of fruit [previous technique] has been stunned, a ^ scared device early
已如出夕年，相關的專利案件亦不在少數，1 外乎是針對機構設計、控制電路 二’點不 j- 利万在等方面。廢存ι| 而吕，請參考本國公告第491〇95 重量量測裝置」之第五圖，，專利重^二 =選別機的 界環境因素變動而改變重量量測的精準度疋;求：克服外 影響’故其特徵在於當獲得每_ 二到溫度 電路可立即Θ 如仏 信號（Μ2)後，該控制 即口復至一起始信號（Μ0),以接古舌旦 準度。 &阿重篁量測的精 隹，、、、' 此扁專利在每次稱重時 — 信號的起點，II此降低外在環境因素二為重量 此種技術亦是具有缺點。例如該起始二的誤差’然而 值’則當外部環境改變日夺’右-疋成-固定 扣，另-方面，若是每-欠旦、目的效果將會大打折 正作業又過度繁雜；再者，由於 ：起始信號’則校 以置放待秤果實的承載盤亦會受累 裝置其使用，用 導致承載盤的重量逐漸改變^當㈣或異物的加入， 等顆粒較小、重量較輕的 破置疋應用於檳榔 貫時，由於不同級別間距的重 13,38599 量差別不A，故即使承栽盤僅是些微的重量改變 響產品分級的正確度。 π會〜 此外^另-件本國公告第5q6295 1「果粒重量選 別機之重里分級兼計數裝置中 理分級的方式改以電子方切：f要疋將原本以機械原 4…根據其說明書所記載， 疋預二將母-個承載盤的空載重量預先儲存於記憶體中， ㈣貫際測得的重量相減而得出待秤果實的淨重。如同先 前所述，言十重裝置會因使用時而使承載盤受污垢或異物加 :，導致承载盤的重量逐漸改變’而本案並未對此缺點提 :進-步的解決管道，因此仍是會有分級誤差的問題存 【發明内容】 鑑於目冑I實選別機之計重裝置無法在每次枰重時均 對承載盤執行歸零扣重，進而影響秤重結果的正確性，故 本發明之目的係提供一種可精確測出待秤果實其精準淨 值的計重裝置。 為達成前述目的，本發明果實選別機之計重控制農置 包含： ~ 資料轉換及彳g號處理單元，係負責執行類比重量作 號的連續近似轉換作業及信號處理； 一第一重量感測電路及一第二重量感測電路，係分別 連接該資料轉換及信號處理單元的兩輸入端。 利用前述電路，該第一重量感測電路及第二重量感測 电路可分別感測該果實選別機一承載盤之無載重量值及帶 1338599 ，重量值’並輸出予資料轉換及信號處理單元，經執行運 後可求出落於該承載盤内之待秤果實其實際淨重值由 :可在每次枰重過程中均完全扣除空承載盤其無栽重量， 此，可確保待秤果實之實際淨重係精確量測。 其中，各重量感測電路件包含有： —電源穩壓電路，係產生一穩定的工作電壓； :重量感測元件，係、連接該電源穩壓電路的輸出端 以：得該工作電壓’該重量感測元件係根據_待秤物的 重量而產生一對應的類比式重量信號； 差動彳。唬放大處理單元，其兩輸入端係分別連接 感測元件的兩輸出端，對該重量信號執行放大處 理； 一過激抑制及信號調整單元，係連接該差動信號放 大處理單元的輸出端； 電i 輕阻抗匹配單元，係連接於該過激抑制及As it has been the eve of the year, there are not a few patent cases involved. 1 It is aimed at the design and control of the circuit. For the waste ι| and Lv, please refer to the fifth picture of the national publication No. 491〇95 weight measuring device, the patent weight = 2 = the accuracy of the environmental factors of the sorter changes the accuracy of the weight measurement; Overcoming the external influence' is characterized in that when the _2 to temperature circuit is immediately available, such as the 仏 signal (Μ2), the control is repeated to a start signal (Μ0) to pick up the accuracy. & A heavy 篁 measured fine 、,,,, ' This flat patent at each weighing - the starting point of the signal, II this reduces the external environmental factor two is the weight This technology also has shortcomings. For example, the error of the first two is 'however', when the external environment changes, the right-right-fixed-fixed buckle, and the other, if it is per-owed, the effect will be greatly discounted and the operation is too complicated; Because: the initial signal 'the carrier plate for placing the fruit to be weighed will also be affected by the device, which will cause the weight of the carrier to gradually change. ^When (4) or foreign matter is added, the particles are smaller and lighter. When the broken 疋 is applied to the betel nut, the difference of the weight of 13,38599 is not equal to A, so even if the bearing plate is only a slight weight change, the correctness of the product classification is correct. π 会~ In addition, ^ another - piece of national announcement 5q6295 1 "The weight of the fruit weight sorting machine in the classification and counting device in the way of grading to electronic cutting: f to be the original mechanical original 4... according to its instructions It is recorded that the unloaded weight of the mother-carrier tray is stored in the memory in advance, and (4) the weight measured by the cross is subtracted to obtain the net weight of the fruit to be weighed. As described earlier, the ten-weight device will Due to the use of the carrier disk due to dirt or foreign matter:, resulting in the gradual change of the weight of the carrier disk 'and this case does not mention this shortcoming: step-by-step solution to the pipeline, so there will still be problems with classification errors [invention In view of the fact that the weighing device of the actual selection machine cannot perform the zeroing deduction on the carrier disk every time the weight is heavy, thereby affecting the correctness of the weighing result, the object of the present invention is to provide an accurate measurement. The weighting device for the accurate net value of the fruit to be weighed. In order to achieve the above object, the weighing control of the fruit sorting machine of the present invention comprises: ~ data conversion and processing unit, which is responsible for performing the continuous weighting of the analog weight Similar to the switching operation and signal processing; a first weight sensing circuit and a second weight sensing circuit are respectively connected to the two input ends of the data conversion and signal processing unit. Using the foregoing circuit, the first weight sensing circuit and The second weight sensing circuit can respectively sense the unloaded weight value of the carrier of the fruit sorting machine and the belt 1338599, and the weight value is outputted to the data conversion and signal processing unit, and can be determined to fall on the load after being executed. The actual net weight value of the fruit to be weighed in the plate is: the weight of the empty carrier plate can be completely deducted in each weighing process, which ensures the accurate measurement of the actual net weight of the fruit to be weighed. The sensing circuit component comprises: a power supply voltage stabilizing circuit for generating a stable operating voltage; a weight sensing component connected to the output of the power voltage stabilizing circuit to: the operating voltage 'the weight sensing component Corresponding to the weight of the object to be scaled to generate a corresponding analog weight signal; differential 彳. 唬 amplification processing unit, the two input ends are respectively connected to the two output ends of the sensing element, Performs amplification processing the weight signal; a drastic suppression and signal adjusting unit, the line connecting the output terminal of the differential amplification signal processing unit; i light electrical impedance matching means, connected to the system and inhibit the radical
4。號调&單元的輸出端’該電壓隨耦阻抗匹配單元連接 占亥資料轉換及信5卢# ?田。。_ 現處理早凡的前述兩輸入端； 貝料傳輸單兀’係連接該資料轉換及信號處理單元 的資料端。 【實施方式】 〇π Μ >考第圖所不，係為一般選別機台（1 〇 )的簡 單結構示意圖，該選別秘△ / θ &別機台（1 0 )設有一容置大量果粒 的進料裝置（〗η、 _ υ ) ’可控制果粒逐一掉出；其中該選別 機台（10)的轉勤 平寻動口 （ 1 1 )係受一馬達（1 2 )驅動 (:S > 6 丄 "疋轉轉動。（1 1 )外圍設有複數個承載盤（1 3 )， 、轉動。（1 1)下方設有複數個不同重量分級區（丄 4) ’該轉動台（11)内對應各個重量分㈣（14) 的位置可設有—落料控制開關（1 5 )及-分選計數器（χ )而對應名進料裝置（丄丄）的出口位置的兩側分設 有电子方秤（1 7 )，以分別量測各承載盤（1 3 )其 空載及載重的重量。 月 > 考第一二圖所示，為本發明計重控制裝置的電 路，其包含有一資料轉換及信號處理單元（2〇)、一第 一重量，測電路（3〇)…第二重量感測電路（40)、 一計數單元（5 0 )、一資料傳輸單元（6 〇 )。 貝料轉換及信號處理單元（2 ◦)係負責執行類比重 量信號的連續近似轉換作業及信號處理。 第一重量感測電路（3 〇 )與第二重量感測電路（4 0 )係完全相同，兩電路（3 〇 )( 4 〇 )分別連接該資 料轉換及信號處理單元（2 〇 )的兩輸入端 (VJN1 )(VJN2)，各電路的組成元件包含： 一電源穩塵電路（31)(41)，係提供一穩定的 工作電壓，其主要包含一第一運算放大器（〇ρι)(〇ρ5)、一 連接該運算放大器（〇P1)(〇P5)放出端的rc並聯電路、一 連接該RC並聯電路一端的達靈頓電路（qi,Q2)(Q3Q4)、 一連接該達靈頓電路（Q1，Q2)(Q3，Q4)輸出端的穩壓調整電 阻（VR1 )(VR4)，該穩壓調整電阻（VR1 )(VR4)係連接該第一 運算放大器（OP1)(〇P5)的其中一輸入端； 1338599 一重量感測元件（Load cell) ( 3 2 ) ( 4 2 ) ’係連 接該電源穩壓電路（31) (42)的輸出端以取得該工 作電壓，該重量感測元件（3 2 ) ( 4 2 )係根據一待枰 物的重量而產生一對應的類比式重量信號； 一差動信號放大處理單元（3 3 ) ( 4 3 ) ’係由~ 運算放大器（〇P2)(OP6)構成，其兩輸入端係分別連接該重 量感測元件（3 2 ) ( 4 2 )的兩輸出端，可對該重量信 號執行放大處理作業； 一過激抑制及信號調整單元（3 4 ) ( 4 4 ) ’係連 接該差動信號放大處理單元（3 3 )的輸出端，係由一第 二運算放大器（0P3)(0P7) '跨接於該第二運算放大器 (OP3)(OP7) —輸入端與輸出端之間的電容（C3)(C6)、放大 倍率調整電阻（\/R3)(VR6)及一連接該第二運算放大器 (〇P3)(OP7)該輸入端的準位調整電阻（Vr2)(VR5)等元件構 成； 一電壓隨耦阻抗匹配單元（3 5 ) ( 4 5 )，係連接 於該過激抑制及信號調整單元（3 4 )( 4 4 )的輸出端， 係將一第二運算放大器（〇P4)(〇P8)之輸入端及輪出端直接 連接而構成’該電壓隨耦阻抗匹配單元（3 5 ) ( 4 5 ) 係連接該資料轉換及信號處理單元（2 〇 )的兩輸入端 (V_IN1)(VJN2)。 計數單元（5 0 )係利用光感測器構成，該光感測器 之輸出端連接資料轉換及信號處理單元（2 〇 )的另一輸 入端（D_IN)。 1338599 資料傳輸單元（6 〇 ) _ )係連接該-貝料轉換及信號處理 草兀（2 〇 )的資料端（RX，丁χ)，在本實施例中是以一 通用串列匯流排（USB)介面構成。 有關本發明之計重和^在丨壯 二】裝置的電路動作請配合參考第 * "圖所不，兩電子韵^ f "I 7、μ、 1 7 )係分別連接控制裝置的第 -重量感測…30)及第二重量感測電路"〇)， 隨著轉動“…帶動各承載盤（13)的轉動，各承 載盤（13)M通過第_電切秤（17)並由第一重 量感測電路（30)測出-無載重量的信％，由該資料轉 換及信號處理單元（20)肖算出一對應的無載重量值， 並先加以暫時儲存；而隨著該承載盤（1 3 )肖前轉動， 選別機台（1 G )《落料機構會將待抨果實投人該承載盤 (1 3 ) π ’當承載盤（丄3 )通過該第二電子磅秤（丄 ::時’第二重量感測電路（4〇)即測出一帶載重量的 信號，並同樣以該資料轉換及信號處理單元（2 〇 )換算 出-對應的帶載重量值，此時以該帶載重量值扣除前述暫 存的無載重量值，即可得出該待果實之精準淨重值。 在本發明當中，該資料轉換及信號處理單元（2 〇 ) 係將第-重量感測電路（3 〇 )肖第二重量感測電路（4 〇)的類比信號以連續近似法（Successive app「〇ximati〇n ADC)進行類比/數位轉換。料考第四圖所示，為連續近 似法的運算電路’ |由一比較器、一邏輯控制電路、一連 續近似暫存器(SAR)、— N位元數位，類比轉換器等元件 組成H輸人電壓Va |由類比轉換成數位值時，邏 1338599 私"控制電路送出 左。。认， ' ' 一 w廿裔，從連續近似暫 存H N位元的數值給數位/類比轉換器數 比轉換器將此N位元的數值轉換為一類比電壓礼 =^壓Vb與輸人„Va比較，時結果回授給輯X ::制電路，根據此次比較結果修正下一次由連續近似暫存 =送出㈣㈣值。在邏輯控制電路配合時脈信號⑷4. The output of the unit & unit's voltage is coupled with the coupling impedance matching unit. . _ The two input terminals are processed earlier; the bead transmission unit is connected to the data end of the data conversion and signal processing unit. [Embodiment] 〇π Μ > is not a simple structure diagram of a general sorting machine (1 〇). The sorting secret △ / θ & other machine (10) has a large capacity. The feeding device (〗 η, _ υ ) of the fruit particles can control the fruit pieces to fall out one by one; wherein the turning level searching port (1 1 ) of the sorting machine (10) is driven by a motor (1 2 ) (:S > 6 丄" 疋 rotation. (1 1 ) There are a plurality of carrier plates (1 3 ) on the periphery, and rotate. (1 1) There are a plurality of different weight grading areas (丄4) below The position of the rotating table (11) corresponding to each weight component (4) (14) may be provided with a blanking control switch (15) and a sorting counter (χ) and corresponding to the outlet position of the feeding device (丄丄). The electronic scales (1 7 ) are respectively arranged on both sides to measure the weight of each of the carrying trays (1 3 ) and the weight of the load. Month > The first two figures show the weight control of the present invention The circuit of the device comprises a data conversion and signal processing unit (2〇), a first weight, a measuring circuit (3〇), a second weight sensing circuit (40), a meter Unit (50), a data transmission unit (6 〇). The bedding conversion and signal processing unit (2 ◦) is responsible for performing continuous approximation conversion operations and signal processing of the analog weight signal. First weight sensing circuit (3 〇 ) is identical to the second weight sensing circuit (40), and the two circuits (3 〇) (4 〇) are respectively connected to the two input terminals (VJN1) (VJN2) of the data conversion and signal processing unit (2 〇), The components of each circuit include: a power supply stabilizing circuit (31) (41) that provides a stable operating voltage, which mainly includes a first operational amplifier (〇ρι) (〇ρ5), and a connection to the operational amplifier ( 〇P1)(〇P5) rc parallel circuit at the output end, a Darlington circuit (qi, Q2) (Q3Q4) connected to one end of the RC parallel circuit, and a Darlington circuit (Q1, Q2) (Q3, Q4) The output voltage regulation resistor (VR1) (VR4), the voltage regulator adjustment resistor (VR1) (VR4) is connected to one of the input terminals of the first operational amplifier (OP1) (〇P5); 1338599 a weight sensing Load cell ( 3 2 ) ( 4 2 ) ' is connected to the power supply voltage regulator circuit (31) (42) The output end of the weight sensing component (3 2 ) ( 4 2 ) generates a corresponding analog weight signal according to the weight of a workpiece; a differential signal amplification processing unit (3 3 ) ( 4 3 ) ' is composed of ~ operational amplifier (〇P2) (OP6), and its two input terminals are respectively connected to the two output ends of the weight sensing element (3 2 ) ( 4 2 ), which can be executed on the weight signal An amplification processing operation; an overshoot suppression and signal adjustment unit (3 4 ) (4 4 ) ' is connected to the output of the differential signal amplification processing unit (3 3 ) by a second operational amplifier (0P3) (0P7) 'Crossover to the second operational amplifier (OP3) (OP7) - the capacitance between the input and the output (C3) (C6), the magnification adjustment resistor (\/R3) (VR6) and a connection to the second The operational amplifier (〇P3) (OP7) is composed of components such as the level adjustment resistor (Vr2) (VR5) at the input end; a voltage-corresponding impedance matching unit (3 5 ) (45) is connected to the overdrive suppression and signal. The output of the adjustment unit (3 4 ) ( 4 4 ) is the input and the output of a second operational amplifier (〇P4) (〇P8) The terminal is directly connected to form 'the voltage-corresponding impedance matching unit (3 5 ) ( 4 5 ) is connected to the two input terminals (V_IN1) (VJN2) of the data conversion and signal processing unit (2 〇 ). The counting unit (50) is constituted by a photo sensor, and the output of the photo sensor is connected to another input terminal (D_IN) of the data conversion and signal processing unit (2 〇 ). 1338599 data transmission unit (6 〇) _ ) is the data end (RX, Ding) connecting the bedding conversion and signal processing grasshopper (2 〇), in this embodiment is a universal serial bus ( USB) interface. Regarding the circuit operation of the device of the present invention and the device in the second and second generations, please refer to the reference * " Figure 2, the two electronic rhymes ^ f " I 7, μ, 1 7) are respectively connected to the control device - weight sensing ... 30) and the second weight sensing circuit "〇), as the rotation "... drives the rotation of each carrier disk (13), each carrier disk (13) M passes the first_cutting scale (17) And the first weight sensing circuit (30) detects the letter % of the unloaded weight, and the data conversion and signal processing unit (20) calculates a corresponding unloaded weight value and temporarily stores it; The carrier tray (1 3 ) is rotated forward, and the machine (1 G) is selected. The blanking mechanism will put the to-be-sucked fruit into the carrier tray (1 3 ) π ' when the carrier tray (丄3) passes the second The electronic scale (丄::' second weight sensing circuit (4〇) detects the signal of the load carrying capacity, and also converts the corresponding load weight value by the data conversion and signal processing unit (2 〇) At this time, the pre-stored unloaded weight value is subtracted from the carried weight value to obtain the precise net weight value of the to-be-fruit. The data conversion and signal processing unit (2 〇) uses a continuous approximation of the analog signal of the first weight sensing circuit (3 〇) and the second weight sensing circuit (4 〇) (Successive app "〇ximati〇 n ADC) for analog/digital conversion. As shown in the fourth figure, the arithmetic circuit for continuous approximation is composed of a comparator, a logic control circuit, a continuous approximation register (SAR), and N bits. Digital, analog converter and other components make up the H input voltage Va | When the analogy is converted into a digital value, the logic 1338599 private " control circuit sends out the left.. recognize, ' ' a w descent, from the continuous approximation of the temporary HN bit The value is converted to a digital/analog converter ratio converter to convert the value of the N bit into an analog voltage. The voltage Vb is compared with the input „Va, and the result is fed back to the X:: circuit. The second comparison result is corrected by the continuous approximation temporary storage = sending out (four) (four) values. The logic control circuit cooperates with the clock signal (4)
連，控制’連續近似暫存器持續進行比較和移位摔作 最後的判斷。㈣’該數位/類比轉換 =類比電MVb會近似該輸入電壓Va，而連續近似暫 存°。的取後結果被鎖存並輸出一 N位元的轉換結果。 本發明採用連續近似法的優點在於運算快速，其取 與它種轉換器相比，功率消耗相當低： ㈤達12 “的解析度情況之下，其轉換速度仍可 當快速且轉換精確；相對於積分型的類比/數位轉 1〇Ι3〇Γ換速率慢、轉換速率在12位元時即降低到 0 sps等缺點，本發明係可加以克服。 知上所述，本發明利用兩組重量感測電路，在每—次 =重作業時可分㈣測承载盤之無載重量及帶載重量， 兩減後可精確計算出待秤果實的淨重，即使承載盤經 =。W間的使用而累積污垢時’仍不會影響秤重精確 【圖式簡單說明】 第—圖：係一選別機台之平面示意圖。 第二圖：本發明之電路方塊圖。 10 13.38599 第三圖：本發明之詳細電路圖。 第四圖：係連續近似法之運算電路方塊圖。 【主要元件符號說明】 (1 0 )選別機台 （1 1 )轉動台 (1 2 )馬達 （1 3 )承載盤 (1 4 )重量分級區 （1 5 )落料控制開關 (1 6 )分選計數器 （1 7 )電子磅秤Even, the control 'continuous approximation register continues to compare and shift to the final judgment. (d) 'This digital/analog conversion = analog MVb will approximate the input voltage Va, while the continuous approximation is °. The result of the fetch is latched and an N-bit conversion result is output. The advantage of the continuous approximation method of the present invention is that the operation is fast, and the power consumption is relatively low compared with the converters thereof: (5) Under the resolution of 12", the conversion speed can still be fast and the conversion is accurate; The present invention can be overcome by the disadvantages of the integral type analog/digital conversion 1〇Ι3〇Γ slow rate, and the conversion rate is reduced to 0 sps at 12 bits. As described above, the present invention utilizes two sets of weights. The sensing circuit can measure (4) the unloaded weight and the load capacity of the load-bearing plate during each-time=heavy operation. After the two reductions, the net weight of the fruit to be weighed can be accurately calculated, even if the load-bearing disk passes the use of W. When accumulating dirt, it still does not affect the weighing accuracy. [Simplified illustration of the drawing] Fig.: A schematic plan view of a sorting machine. Fig. 2: Circuit block diagram of the present invention. 10 13.38599 Third drawing: The present invention Detailed circuit diagram. Fourth diagram: block diagram of the operation circuit of continuous approximation method [Description of main component symbols] (1 0) Sorting machine (1 1 ) Rotating table (1 2 ) Motor (1 3 ) Carrier disk (1 4) Weight classification area (1 5 ) Control switch (16) sorting counter (17) of electronic scales
(2 0 )資料轉換及信號處理單元 (3 0 )第一重量感測電路 (4 0 )第二重量感測電路 (31) ( 4 1 )電源穩壓電路 ( 3 2 ) ( 4 2 )重量感測元件 ( 3 3 ) (43)差動信號放大處理單元 ( 3 4 ) ( 4 4 )過激抑制及信號調整單元 ( 3 5 ) ( 4 5 )電壓隨耦阻抗匹配單元 (5 0 )計數單元 （6 0 )資料傳輸單元(2 0) data conversion and signal processing unit (30) first weight sensing circuit (40) second weight sensing circuit (31) (4 1) power voltage regulator circuit (3 2 ) ( 4 2 ) weight Sense element (3 3 ) (43) Differential signal amplification processing unit (3 4 ) ( 4 4 ) Overdrive suppression and signal adjustment unit ( 3 5 ) ( 4 5 ) Voltage with coupling impedance matching unit (5 0 ) counting unit (6 0 ) data transmission unit
(S ) 11(S ) 11